“echo sounder”的概念、定义、翻译、参考文献-科学参考

单词	echo sounder
释义	echo sounder Encyclopedia 工学回声测深仪释 echo sounder回声测深仪利用声波在水中传播时遇到不同介质界面产生反射的特性来测定水深的仪器。
随便看	closed ecosystem closed edge sequence closed edge train closed elastic drive closed element closed embedding closed-end fund closed equivalence relation closed expression closed extension closed family of sets closed field closed filament closed filter closed fishing areas closed fishing season closed-flux device closed fork mounting closed form closed-form number closed-form solution closed formula closed fuel cycle closed function closed geodesic

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